@book{mittelbach2004latex,
  title={The LATEX companion},
  author={Mittelbach, Frank and Goossens, Michel and Braams, Johannes and Carlisle, David and Rowley, Chris},
  year={2004},
  publisher={Addison-Wesley Professional}
}
@article{batts2007beamer,
  title={A beamer tutorial in beamer},
  author={Batts, Charles T},
  journal={The University of North Carolina at Greensboro, Department of Computer Science},
  year={2007}
}